The pair posed for this unbelievably cute photo together at the 25th Anniversary Stonewall Equality Dinner in London on Thursday night.

And former X Factor star Marcus seems very settled down with his man, and posted the lovely picture to Instagram with the caption: "Nice one of me and the wife @robinwindsor at the@stonewalluk equality dinner last night! What a wonderful evening x."

The 25-year-old looked super cool in a black jacket, jeans and a gold belt, while Robin opted for a tartan suit and waistcoat like the suave man he is.

What an amazing couple they are.

(Photo: @MarcuscollinsUK)

Marcus tweeted after: "I had such an amazing a and informative evening at @stonewalluk and met some truely inspirational people @sueperkins @onebiggins @maryportas."

We will excuse the spelling error because he's so nice.

And Robin was full of the joys of spring the next day (not) and tweeted: "I may, just may of had a little too much red wine last night!"